Diagnostic Routine T

Diagnostic Routine T

Diagnostic Overview

B101E:23

Refer to Wiring Diagram Set 54 for schematic and connector information Electrical Diagrams.

DTC Fault Trigger Conditions






Pinpoint Test

1. CHECK THE A/C (Air Conditioning) COMMAND CIRCUIT FOR AN OPEN

1. Ignition OFF.

2. Disconnect: HVAC (Heating, Ventilation, and Air Conditioning) Module C2357A.

3. Disconnect: BCM (Body Control Module) C2280C.

4. Measure:





Is the resistance greater than 10,000 ohms?






2. CHECK FOR CORRECT HVAC (Heating, Ventilation, and Air Conditioning) MODULE OPERATION

1. Ignition OFF.

2. Disconnect and inspect the HVAC (Heating, Ventilation, and Air Conditioning) module connectors.

3. Repair:

- corrosion (replace connector or terminals- clean module pins)
- damaged or bent pins- replace terminals/pins
- pushed-out pins- replace pins as necessary

4. Reconnect the HVAC (Heating, Ventilation, and Air Conditioning) module connectors. Make sure they seat and latch correctly.

5. Operate the system and verify the concern is still present.

Is the concern still present?